March 6, 2021 at 6:54 amMohamed_Wael_BadawySubscriber
I am simulating the motion of a droplet in a micro-channel where the droplet dynamics is highly dependent on the thin layer of fluid between the interface and the wall boundaries.
I am trying to use VOF mesh adaption while i am using inflated mesh near the boundaries. However, I am always facing the problem of having a layer of non-adapted mesh between the inflated layers and the adapted zone. I have tried to separate the inflated mesh zone and retry the mesh adaption but i got the same results. I would like to know if there is a method that can successfully adapt the mesh according to the VOF in the vicinity of the inflated mesh zone.March 6, 2021 at 1:17 pmYasserSelimaSubscriberDo the adoption by coordinates using expression. Let's say you want to adopt the cells between x=0.05 m to x=0.1m ... use this expressionnIF(AND(Position.x < 0.1[m],Position.x>0.05[m]) , 1,0)nMarch 6, 2021 at 1:29 pmMarch 6, 2021 at 1:39 pmYasserSelimaSubscriberTry it without < .. like thisnIF(Position.y >0.05[m] , 1,0)nnMarch 6, 2021 at 1:54 pmMohamed_Wael_BadawySubscriberSame result. Fluent intentionally leaves a layer of 1 element thick unadapted next to the inflated layers.nMarch 6, 2021 at 1:58 pmYasserSelimaSubscriberNot sure how to solve this. nYou have no option but going back to meshing if you want to solve this soon. The Ansys experts are off in the weekendsnMarch 6, 2021 at 2:04 pmMohamed_Wael_BadawySubscriberThanks for your help. What do you mean by going back to meshing?nMarch 6, 2021 at 2:06 pmYasserSelimaSubscriberHow did you create your mesh in the first place. Go there and select smaller element size for this wall. And re-meshnMarch 24, 2021 at 6:48 pmMohamed_Wael_BadawySubscriberI FINALLY managed to overcome this issue, I changed the minimum orthogonality ratio in the advanced mesh adaption to zero and it worked!nMarch 24, 2021 at 8:08 pmYasserSelimaSubscriberThanks for sharing the solution!nViewing 9 reply threads
Ansys Innovation Space
- You must be logged in to reply to this topic.
Boost Ansys Fluent Simulations with AWS
Earth Rescue – An Ansys Online Series
Ansys BlogTrending discussions
- Suppress Fluent to open with GUI while performing in journal file
- Floating point exception in Fluent
- What are the differences between CFX and Fluent?
- Heat transfer coefficient
- Getting graph and tabular data from result in workbench mechanical
- The solver failed with a non-zero exit code of : 2
- Difference between K-epsilon and K-omega Turbulence Model
- Time Step Size and Courant Number
- Mesh Interfaces in ANSYS FLUENT
- error in cfd post
© 2023 Copyright ANSYS, Inc. All rights reserved.